Sash-lock.



Patented July 8, |902. C. STIMPSON.

SASH LOCK.

(Application led Feb. 27, 1902.)

(No Model.)

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UNrTnD STATES ,P'ArnrrrA rrrcn.

CHARLES STIMPSON, OF PLAINFIELD, NFV JERSEY.

SASH-LOCK.

SPECIFICATION forming part of Letters Patent No. 704,279, dated July 8,1902.

Application filed February 27,1902. Serial No. 96,003. (No model.)

T0 @ZZ 'LL/72,011?, t muy concern:

Be it known that I, CHARLES STIMPSON, a citizen of the United States,residing at Plainfield, in the county of Union and State of New Jersey,have invented an Improvement in Y Sash-Locks, of which the following isa specification.

My invention relates to a sash-lock adapted to be placed on the topsurface of the upper rail of a lower window-sash at oneror both endsadjacent to the window-casing and includes means secured to the verticalrails of the upper sash to be engaged by the sash-lock to draw thesashes together and lock the same either in the closed position or inany desired and predetermined open position.

In carrying ont my invention I provide a case preferably of two partsand of any suitable material and I employ a swinging arm pivoted withinsaid case and a hook-ended latch-lever pivoted to and operated by saidswinging arm, so as to cause its hook end to move out of and into thecase for engaging or releasing mortise-plates in the vertical rails ofthe upper sash, and so drawing together and locking the sashes orreleasing the same. The mortise-plates are to be placed at predeterminedspaced-apart distances.

In the drawings, Figure 1 is a plan of my improved sash-lock. Fig. 2 isa similar View with the cap ortop removed. Fig. 3 is a broken elevationshowing the application of myinvention. Fig. i is a transverse sectionand elevation showing the window-sashes slightly apart. Fig. 5 is asectional plan taken on line x ur, Fig. 3.

a represents a case made of metal or any suitable material, having abottom and side walls 2, 3, 4, and 5 and provided with a cover a. Thewall 3 is cut away at 6, and the walls et and 5 are cut away at 7, thewall 5 also being provided with the cut-away portion or notch 8.

I employ an arm b, pivoted at 9 to the bottom of the case a and adaptedto swing on said pivot 9 within the case and within the limitations ofthe cut-away portions 7 8 of the walls 4 and 5. A latch-lever c, adaptedto fit entirely within the confines of the case a, is pivoted at 10 tothe swinging arm I) and not at all to the case. By swinging the arm hfrom the position shown in full lines in Fig.

2 to the position shown in dotted lines the hook end of the lever c ispassed through the opening G in the wall 3 and turned into the positionshown in dotted lines.

11 and 12 are guide-pins for the latch-lever c, and d is an integralprojection within the case, which serves as a base to which the cover amay be secured.

Referring to Figs. 3, et, and 5, my improved sash-lock is adapted to besecured, preterably by screws 13, which pass through both the cover andthe case, to the top surface of the upper or meeting railf of the lowerwindow-sash and a't the respective ends adjacent to the window-casing e,the end 3 being placed iiush with the outer edge of the meeting-rail f.The vertical rails g of the upper sash are provided with metalmortise-plates 71in which the openings 14 are preferably central. Thesemortise-plates are set flush in the faces of the vertical rails, so thatthere are no projecting surfaces to interfere with the free movement ofthe upper sash, and the vertical rails are recessed at t' behind themortise-plates 7L, ad-l jacent to the openings 14 therein. Themortise-plates 7L are so placed that the hook ends of the latch-leversmay pass through the openings 14 in the plates, draw the sashestogether, and lock them. The plates are also placed at suitable andpredetermined 'distances apart, so that the sashes may be drawn togetherand locked in the desired position, either with the window open orclosed. Figs. 3 and 5 show the sashes together and the window closed,Fig. 4 showing the sashes apart, the plates 7L in this figure beingshown somewhat farther apart than in Fig. 3. The cutaway portion S ofthe walt 5 is provided to receive the swinging arm b in place to lockthe device and prevent tampering with the same from outside the window.

I claim as my invention- 1. In a sash-lock, the combination with a caseto be secured to the top surface of the upper rail or member of thelower sash, of a swinging arm pivoted within the said case, alatch-lever pivoted to the said swinging arm and movable within saidcase, and a mortiseplate secured in the face of the vertical rail of theupper sash and adapted to be engaged by the latch-lever, the swinging ofthe said arm causing the end of the latch-lever to move IOO out of thecase, engage the mortise-plate, lock the sashes and draw the sametogether, substantially as spec-ined.

2. A sash-lock comprising a case having opposite side apertures, aswinging arm pivoted Within the case at a point distant from theretracted position at one side of the pvot of the arm to the position ofengagement at the other side of the said pivot, and a rnor- I5tise-plate engaged by the latch-lever, sul)` stantially as specified.

Signed by me this 2&th day of February,

either end and having one end projecting 1902.

through one side aperture, a latch-leverwith- 1 i in theccase pivotedonly to the short end of l CHARLES STIMPSON' the swinging arln and atVits free latch end lVitnesses:

moving through the opposite side aperture, the pivot of said arm andlatch swinging from Gno. T. PINCKNEY, BERTHA M. ALLEN.

